Nut-lock.



No. 644,062. Paten eeeeeeeeeeeeee 0.

NNNNNN K "cation l I oooooooo UNITED STATES PATENT OFFICE.

lVILLIAM H. DE BRAEE,l OF PLEASANT HILL, OHIO, ASSIGNOR OF 'FWO-THIRDSTO WILLIAM A. RAUDABAUGH, OF SAME PLACE, AND JOSHUA R. RAUDABAUGH,OF OELINA, OHIO.

NUT-Lock.

SPECIFICATION formnig part of Letters Patent no. 644,062, aat February2v, Ieoo.

I Application filed May 8, 1899. Serial No. 715,948. (No model.)

To ctZZ whom it' ir/ty concern,.-

Be it known that I, WILLIAM H. DE BRAE, a citizen of the United States,residing at Pleasant Hill, in the county of Miami and State of Ohio,have invented a new and useful Nut- Lock, of which the followingis aspecification.

This invention relates to nut-locks of that class embodying alongitudinal groove formed across the threads of a bolt and a keyadapted to be inserted into the groove to bind the nut and bolttogether; and the object of the invention is to provide improvements inthis class of nut-locks, whereby the positioning and removal of the nutis facilitated and the threads of both the nut and the bolt are notdamaged, whereby the device may be used a plurality of times. Y

To this end the present invention consists in the combination andarrangement of parts, as will be hereinafter more fully described,

^ shown in the accompanying drawings, and

5o bolt.

particularly pointed out in the appended claim.

ln the drawings, 4Figure l is a perspective view of the device. Fig. 2is a sectional view thereof, taken longitudinally through the groove inthe bolt. Fig. 3 is a similar view before the wire has been twisted uponthe bolt. Fig. 4 is a side elevation of a modified form of theinvention. Fig. 5, is a longitudinal sectional view thereof.

Corresponding parts are designated by like reference characters in allthe figures of the drawings.

Referring to the accompanying drawings, l designates a bolt of commonform having a nut 2 fitted thereto in the usual manner. P rovidedlongitudinally of the bolt and eX- tending a suitable distance acrossthe threads thereof is a groove 3, opening out at one end through thethreaded end of the bolt. It will be noted by reference to Fig. 2 thatthis groove decreases in depth from the outer to the inner end thereof.

The means for locking the nutto the bolt consists of a key formed of asingle length of pliable wire 4, which is adapted to be seated in thegroove formed in the bolt and project a suitable distance beyond the endof the By reference to Fig. 3 it will be seen thereon before the nutbegins to bind upon the wire. The gradual decreasing depth of the groovebrings the wire gradually into the path of the threads of the nut, andas the latter is screwed upon the bolt the threads thereof bite into thewire, and thereby bind the same between the bolt and the nut and preventlongitudinal movement or displacement of the wire.

When the nut has been fitted to its desired position upon the boltinward from the threaded end thereof, the projecting end portion 5 ofthe Wire is twisted about the outer projecting end of the bolt andtightly between adjacent threads thereof, as illustrated at G, Figs. 1and 2, to provide a stop located against the outer face of the nut. Thewire may be wrapped or twisted one or more times about the bolt asdesired or occasion requires, and the wraps thereof filling the groovebetween adjacent threads of the bolt prevent accidental loosening orunscrewing of the nut. In removing the nut it is only necessary tountwist the coils or wraps of the wire and straighten the same out inline with the groove in the bolt, when the nut is free to be unscrewed.

It will be understood that the wire being pliable is comparatively soft,whereby the hard threads of the nut are capable of biting into the wirewithout damage to the said threads, and thus permits of a renewed use ofthe nut.

A modified form of the invention is shown in Figs. 4 and 5 in which thegroove 3 in the bolt is of the same depth throughout, so that thethreads of the nut may not engage with the key 4. To preventlongitudinaldisplacement of the key, the inner end thereof is twisted or coiledabout the bolt, as at 7, prior to the positioning of the nut. The nut isthen fitted to the bolt and the outer projecting end of the Wire key istwisted about the end of the bolt and against the outer face of the nutin IOO the same manner as described for the first form. This latter formlocks the nut against movement in opposite directions,and therebyprevents accidental tightening of the nut, as will be understood.

The present invention provides an exceedingly simple and inexpensivedevice, requiring in addition to the common type of bolt and nut only agroove formed in the bolt and a single length of pliable Wire andpermits of the ready positioning and removal of the nut Without damagingeither the bolt or the nut.

Changes in the form, proportion, size, and the minor details ofconstruction Within the scope of the appended claim may be resorted toWithout departing from the spirit or sacriicing any of the advantages ofthe present invention.

That I claim is- In a nut-lock, the combination with a bolt, thescrew-threaded portion of which is probe embedded within the inner endof the key,

and the outer end of the key may be bent around the bolt outside of thenut.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

WILLIAM II. DE BRAE.

lVitnesses:

FRED DEETER, G. W. WHITMER.

